Table 1.
Properties of agonist-induced events and sparks
| Events | Number
|
Amplitude
|
FWHM, μm
|
Rise time, ms | |||
|---|---|---|---|---|---|---|---|
| With starter | Without starter | Peak | Steady | Peak | Steady | ||
| Toxin-induced | 66 | 9 | 2.48 (0.13) | 0.30 (0.02) | 1.35 (0.07) | 1.49 (0.06) | 8.8 (0.55) |
| Sparks | 1,625 | 1.69 (0.02) | 1.40 (0.01) | 8.7 (0.1) | |||
| Ry-induced | 84 | 12 | 2.35 (0.10) | 0.41 (0.04) | 1.19 (0.07) | 1.61 (0.09) | 6.3 (0.98) |
| Sparks | 963 | 1.85 (0.04) | 1.35 (0.03) | 6.9 (0.19) | |||
| B10-induced | 74 | 17 | 2.27 (0.08) | 0.59 (0.03) | 1.33 (0.06) | 1.86 (0.06) | 6.6 (0.65) |
| Sparks | 3,489 | 1.73 (0.01) | 1.61 (0.01) | 5.1 (0.05) | |||
Events collected from eight experiments with Iptx, four with Ry, and three with B10. Parameters of events without starters, induced by B10 or Ry, were not significantly different from the corresponding ones for the steady phase of events with starters elicited by the same agonist. The entries under “Sparks” always correspond to events collected in the same fibers. The amplitude of the sparks listed was at least 1.0, i.e., the amplitude of the smallest starter included in the table. FWHM, spatial width of the region exceeding half amplitude at the time of peak. Numbers in parentheses are SEM.